金沙国际唯一指定官网

On a wing and some air

作者:沃厨    发布时间:2019-03-07 04:07:16    

By Duncan Graham-Rowe SPACEPLANES may one day lift off from the backs of huge seaplanes that skim the ocean’s surface at half the speed of sound, say space scientists in Russia and Japan. The developers believe that the technology could be highly competitive with traditional vertical take-off systems such as the space shuttle. The plan is to mount a spaceplane on the back of a 1500-tonne, rocket-propelled seaplane, known in Russia as an “ekranoplan”. Flying just a few metres above the water, the ekranoplan rides along on the cushion of air that forms under large flat objects near a surface,

 

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